Apparatus for the manufacture of artificial silk



March 13, 1928.

F. W. SCHUBERT APPARATUS FOR THE MANUFA GTURE OF ARTIFICIAL SILK Original Filed June 2].. 1926 Patented Mar. 13, 1928.

UNITED STATESPATENT orrlcs.

FRIEDRICH WILHELH SCHUBEBT, OF APQPERLEY BRIDGE, NEAR BRADFORD,- ENG- LAND, ASBIGNOB TO BBYSILKA, LIMITED, 0] APIERLEY 3311) FORD, ENGLAND.

APPARATUS FOR THE MANUFACTURE OF ARTIFICIAL SILK.

Original application filed June 21, 1926, Serial No. 117,532, and in Great IBritain July it, 1925. Divided and this application filed July 7, 1927. Serial No. 204,079. a

' The invention of the present application, which is a division of application Serial No. 117,532, filed June 21, 1926, relates to aparatus for use in the manufacture of artiiicial silk filaments, threads and the llke from cupramonia cellulose solutions.

The object of the invention is to provide a means fortreating a viscose SOlllt-ICHKOf the character referred to, prior to passing it to the spinnerette, which will remove any unevenness in viscosity or' percentage of cellulose in the raw solution and insure that it will be of uniform nature when delivered to the spinnerette.

By the apparatus hereinafter described,

"the raw filtered viscose solution is positively fed b a pump through a mixing and cooling cham r in which it is alternately subjected to the action of mixin or disintegrating means and a cooling me ium so that the elements of the solution are thorou hly blended or mixed and the solution as delivered from said .casing will be of uniform viscosity throu hout its body. 4

In t e accompanying drawing,

Fi ure 1' 's a side elevation, partly in longitu inal section, of an apparatus construct ed in accordance with the present invention.

Figure 2 is a similar end elevation in partial transverse section.

Referring to the drawing in both figures of which like parts are desi nated'by the same reference characters, t e apparatus comprises essentially a casing or container 2 having an inlet opening 1 and a discharge outlet 6.

With inlet 1 is connected a suitable pump for forcing the solution to be treated through the casing from said inlet to the outlet 6.

As the invention does not involve the use of any particular form or construction of pump, this element is merely illustrated diagrammatically in the drawing.

Interiorly, the casing 2 is divided into a plurality of chambersor compartments 3 by transversely extending partitions 4. In the embodiment of the invention illustrated,

there are five chambers 3 and across two of these are arranged a series of tubes 5, which extend through the portions of the partitions forming the side walls of the chambers in which they are arranged and'connect' the chambers at both sides of those in which such tubes are positioned.

A shaft 8 is mounted in a bearing 9 in the casing 2 and extends through the partitions 4. To this shaft within each of the GE, NEAR BRAD- chambers between and at the ends of the chambers containing the tubes 5 is secured a plurality of rotar blades or stirrers 7., These are keyed to the shaft 8 so that they will be revolved thereby when it is rotated and each blade or scraper is positionedclose to the adjacent partition 4 so that as the stirrers rotate the body of solution bein forced through the casing by the pump wil be broken or disintegrated, small portions thereof being cut off at the ends of each tube 5.

Cooling water is circulated through the chambers containing the tubes 5, being admitted through inlets 10 and allowed to escape through outlets 11. By this means temperature of the solution passing through the tubes 5 is kept low and prevented from becoming undesirably high.

The apparatus is preferably provided with thermometer pockets 12 communicating with each of the chambers of the casingwithin which the paddles 7 operate so that the ternperature in each of these chambers at any stage of the mixing and cooling operation maybe readily ascertained. Further each of said mixing chambers is provided with an outlet 13 throughwhich a sample of the contents of the chamber may be withdrawn for test or inspection at any time.

Preferably also, the casing 2 is rovided with a chamber or passage 14 w ich encircles the shaft bearing 9 and through which cooling water may be passed, it communicating with an inlet 10 and an outlet 11'.

It is believed that the operation and advantage of the improved apparatus will be readily understood from the foregoing description in connection with the drawing.

It will be understood that the solution to be treated is caused to flow through the easing from the inlet 1 to the outlet (5, by operation of the pump, for example, and during the passing from the inlet to the outlet it will be thoroughly mixed by the action of the stirrer or blades 7, being cooled during its passa e through the tubes 5 connecting the chamfiers in which the blades or paddles operate so that when delivered from the outlet (3 to the spinnerette it will be of uniform viscosity or have a uniform percentage of cellulose throughout.

As described it is preferred to employ a positively acting pump for pushing the solution through the apparatus.

Having thus described my invention What I claim is:

1. In an apparatus for the purpose described, the combination of a casing provided with an inlet and an outlet and interiorly divided into a plurality of chambers by transverse partitions, a series of tubes extending in the direction of the line of flow between the inlet and outlet across one of said chambers and having their ends opening through the partitions forming opposite walls of that chamber, a rotary blade in each chamber on both sides of that containing said tubes adapted to travel in a path close to the adjacent ends of the tubes, and means for causing a viscous liquid or solution for use in the manufacture of artificial-silk to flow through the casing.

2. In an apparatus for the purpose described, the combination of a casing provided with an inlet and an outlet and interiorly divided into a plurality of chambers by transverse partitions, a series of tubes ex tending in the direction of the line of flow between the inlet and outlet across one of said chambers and having their ends open ing through the partitions forming opposite walls of that chamber, means for supplying a cooling medium to the chamber within which the tubes are arranged, a rotary blade in each chamber on both sides of that containing said tubes adapted to travel in a path close to the adjacent ends of the tubes, and means for positively causing a viscose liquid or solution for use in the manufacture of artificial silk to flow through the casing.

3. In an apparatus for the purpose 'described, the combination of a casing provided with an inlet and an outlet and interiorly divided into a plurality of chambers by transverse partitions, a series of tubes extending in the direction of the line of flow between the inlet and outlet across one of said chambers and having their ends openin throu h the partitions forming opposite wa ls of tfiat chamber, a rotary blade in each chamber on both sides of that containing said tubes and adapted to travel in a path close to the adjacent ends of the tubes, :1 common shaft for driving said blades, and means for causing a viscose liquid or solution for use in the manufacture of artificial silk to flow through the casing.

4. In an apparatus for the purpose described, the combination of a casing pro vided with an inlet and an outlet and interiorly divided into a plurality of chambers by transverse partitions, a series of tubes extending in the direction of the line of flow between the inlet and outlet across one of said chambers and having their ends opening through the partitions forming opposite walls of that chamber, a rotar stirrer in each chamber on both sides of tiat containing said tubes and each including a pluralit of blades adapted to travel in a common pat close to the adjacent ends of the tubes, and means for causing a viscose liquid or solution for use in the manufacture of artificial silk to flow through the casing.

5. In an apparatus for the purpose de scribed, the combination of a casing provided with an inlet and an outlet and interiorly divided by transverse partitions into a plurality of alternately arranged mixing and cooling chambers, a rotary stirrer in each mixing chamber, and means for causing a viscose liquid or solution for use in the manufacture of artificial silk to flow through the casing.

6. In an apparatus for the purpose described, the combination of a casin provided with an inlet and an outlet and interiorly divided by transverse partitions into a plurality of alternately arranged mixing and cooling chambers, a rotary stirrer in each mixing chamber, a series of tubes connecting the mixing chambers on opposite sides of each cooling chamber and extending across the last said chamber, means ermitting a coolin medium to circulate tirough the cooling chambers about the tubes therein, and means for causing a viscose liquid or solution for use in the manufacture of artificial silk to flow through the casing.

7. In an apparatus for the purpose described, the combination of a casin provided with an inlet and an outlet an interiorly divided b transverse partitions into a plurality of a ternately arranged mixing and cooling chambers, a rotary stirrer in each mixing chamber, the casing being provided with passages through which test portions of the contents of each mixing chamber may be withdrawn, and means for causing a viscose liquid or solution for use in the manufacture of artificial silk to flow through the casing.

8. In an apparatus for the purpose described, the combination of a casin provided with an inlet and an outlet an intoriorly divided by transverse partitionsinto chamber, means for permitting a coolin mea plurality of alternately arranged mixing dium to circulate through the cooling 0 am- 10 and cooling chambers, a rotary stirrer in her about the tubes therein, and means for each mixin chamber, a shaft supporting the permitting a cooling medium to circulate 5 stirrers and mounted in bearings in the casabout the bearing for the stirrer shaft.

ing, a series of tubes connecting the mixing In testimony whereof I have hereunto set chambers on opposite sides'of each cooling my hand.

chamber and extending across the last said FRIEDRICH WILHELM SCHUBERT- 

